import { Vector3Like } from 'three/webgpu';
import { DIVELightComponent } from '../LightComponent.ts';
/**
 * Sky-and-ground light, brighter from above than from below.
 *
 * @module
 */
export declare class HemisphereLightComponent extends DIVELightComponent {
    readonly isHemisphereLightComponent: true;
    constructor();
    /**
     * Sets which way is "up" for this light.
     *
     * three derives the sky axis from the light's normalised world position, so
     * this is a direction rather than a location -- moving the node does not
     * change it, and it must never be the zero vector.
     *
     * @param direction - The sky direction. Must not be zero-length.
     */
    setDirection(direction: Vector3Like): void;
}